Recycling of concrete waste to produce ready-mix alkali activated cement

被引：47

作者：

Abdel-Gawwad, H. A. ^{[1
,2
]}

Heikal, E. ^{[3
]}

El-Didamony, H. ^{[4
]}

Hashim, F. S. ^{[3
]}

Mohammed, Aya. H. ^{[5
]}

机构：

[1] Housing & Bldg Natl Res Ctr, Raw Bldg Mat Res & Proc Technol Inst, Bldg Mat Chem, Giza, Egypt

[2] ACM Ind Co, Res & Dev, Riyadh, Saudi Arabia

[3] Ain Shams Univ, Fac Sci, Chem Dept, Cairo, Egypt

[4] Zagazig Univ, Fac Sci, Chem Dept, Zagazig, Egypt

[5] Future Univ, Fac Engn, Cairo, Egypt

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 06期

关键词：

Ready-mix alkali activated cement; Concrete waste; Thermal activation; Sodium hydroxide; Compressive strength; PART GEOPOLYMER MIXES; SODIUM-SILICATE;

D O I：

10.1016/j.ceramint.2018.01.042

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The goal of this study is to produce an environmentally, and user friendly ready-mix alkali activated cement (RM-AAC) by thermal activation of concrete waste (CW) in the presence of sodium hydroxide (NaOH). Two major compositional factors, which play an important role in the performance of RM-AAC, i.e. temperature and NaOH percentage, were investigated. The CW showed high stability under thermal treatment up to 1200 degrees C; meanwhile it can be converted to distorted structure with high amorphicity in the presence of appropriate NaOH content. RM-AAC powder can react with water, forming hardened material with an acceptable compressive strength. Due to the white color of RM-AAC powder, it can be beneficially used in prestige construction projects and decorative works.

引用

页码：7300 / 7304

页数：5

共 18 条

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